Description
Dräger Tubes For Short Term Measurements: Benzene 5/a
Dräger Safety offer a massive range of short-term gas detection tubes for the measurement of various gases. This particular set of tubes is for (Benzene 5/a).
The tubes come in a pack of 10 tubes and have a shelf life of 2 years.
Application Range:
| Standard Measuring Range: | 5 to 40 ppm |
| Number of Strokes n: | 15 to 2 |
| Time for Measurement: | max. 3 min |
| Standard Deviation: | ± 30 % |
| Colour Change: | white to red brown |
Ambient Operating Conditions:
| Temperature: | 0 to 40 °C |
| Absolute Humidity | max. 50 mg H2O / L |
Reaction Principle:
2 C6H6 + HCHO ~> C6H5-CH2-C6H5 + H2O C6H5-CH2-C6H5 + H2SO4 ~> p-quinoid compound
Cross Sensitivity:
Other aromatics (toluene, xylene) are retained in the pre-layer causing a reddish brown discoloration. If the toluene or xylene concentrations are too high the entire pre-layer up to the indicating layer is discolored making a benzene measurement impossible. Petroleum hydrocarbons, alcohols and esters do not affect the indication..
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